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Fix string lacking null termination in IsFileExtension (#2637)

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When file extension is longer or equal length compared to buffer holding lowercased string, strncpy does not null terminate the string.
Increased buffer size by 1 to ensure it will always be null-terminated, so that following strcmp does not read out of buffer bounds.
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HarriP 2022-08-13 18:36:29 +03:00 • committed by GitHub
parent 56072a631d
commit e0b487c641
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src/rcore.c
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@ -2842,7 +2842,7 @@ bool IsFileExtension(const char *fileName, const char *ext)
int extCount = 0;
const char **checkExts = TextSplit(ext, ';', &extCount); // WARNING: Module required: rtext
char fileExtLower[MAX_FILE_EXTENSION_SIZE] = { 0 };
char fileExtLower[MAX_FILE_EXTENSION_SIZE + 1] = { 0 };
strncpy(fileExtLower, TextToLower(fileExt),MAX_FILE_EXTENSION_SIZE); // WARNING: Module required: rtext
for (int i = 0; i < extCount; i++)